SE8004114L - POWER DETECTOR DEVICE FOR AN AUTOMATIC PHONE SWITCH - Google Patents

POWER DETECTOR DEVICE FOR AN AUTOMATIC PHONE SWITCH

Info

Publication number: SE8004114L
Authority: SE; Sweden
Prior art keywords: detector device; power detector; phone switch; automatic phone; automatic
Prior art date: 1979-06-06

Application number

SE8004114D

Other languages

Swedish (sv)

Inventor

Den Enden A W M Van

Mil J F P Van

Original Assignee

Philips Nv

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1979-06-06

Filing date

1980-06-03

Publication date

1980-12-07

1980-06-03 Application filed by Philips Nv filed Critical Philips Nv

1980-12-07 Publication of SE8004114L publication Critical patent/SE8004114L/en

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Computer Networks & Wireless Communication (AREA)
Interface Circuits In Exchanges (AREA)
Monitoring And Testing Of Exchanges (AREA)

SE8004114D 1979-06-06 1980-06-03 POWER DETECTOR DEVICE FOR AN AUTOMATIC PHONE SWITCH SE8004114L (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL7904429A NL7904429A (en)	1979-06-06	1979-06-06	FLOW DETECTION DEVICE FOR AN AUTOMATIC TELEPHONE CONTROL PANEL.

Publications (1)

Publication Number	Publication Date
SE8004114L true SE8004114L (en)	1980-12-07

Family

ID=19833306

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
SE8004114A SE447691B (en)	1979-06-06	1980-06-03	CLUTCH DEVICE TO DETECT CURRENTS IN A SYSTEM WITH TWO CONDUCTORS USING EARTH AS JOINT CONDUCTOR
SE8004114D SE8004114L (en)	1979-06-06	1980-06-03	POWER DETECTOR DEVICE FOR AN AUTOMATIC PHONE SWITCH

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
SE8004114A SE447691B (en)	1979-06-06	1980-06-03	CLUTCH DEVICE TO DETECT CURRENTS IN A SYSTEM WITH TWO CONDUCTORS USING EARTH AS JOINT CONDUCTOR

Country Status (11)

Country	Link
US (1)	US4319092A (en)
JP (1)	JPS55165092A (en)
AU (1)	AU537316B2 (en)
BE (1)	BE883638A (en)
CA (1)	CA1143491A (en)
DE (1)	DE3020353C2 (en)
FR (1)	FR2458963B1 (en)
GB (1)	GB2052215B (en)
IT (1)	IT1131255B (en)
NL (1)	NL7904429A (en)
SE (2)	SE447691B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3709538A1 (en) *	1987-03-24	1988-10-06	Siemens Ag	CIRCUIT ARRANGEMENT FOR A TELEPHONE STATION WITH EARTH CONNECTION
JPH0382800U (en) *	1989-12-13	1991-08-22
US5473676A (en) *	1990-09-27	1995-12-05	Radish Communications Systems, Inc.	Telephone handset interface for automatic switching between voice and data communications
US5287404A (en) *	1990-12-20	1994-02-15	Northern Telecom Limited	Telephone subscriber line voltage change detection
US5912964A (en) *	1996-03-27	1999-06-15	Hello Direct, Inc.	Adaptive telephone handset interface
US5892823A (en) *	1996-03-27	1999-04-06	Hello Direct, Inc.	Smart interface technology
US6343126B1 (en)	1996-03-27	2002-01-29	Hello Direct, Inc.	Method and apparatus for interfacing analog telephone apparatus to a digital, analog or hybrid telephone switching system
US7031454B1 (en)	1997-11-06	2006-04-18	Hello Direct, Inc.	Method and apparatus for interfacing telephone apparatus to a digital, analog or hybrid telephone switching system
USD779141S1 (en) *	2014-11-04	2017-02-14	The Fifty/Fifty Group, Inc.	Cleaning cloth

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE633291A (en) *	1962-03-01
FR2147408A5 (en) *	1971-07-27	1973-03-09	Constr Telephoniques
SE7402969L (en) *	1974-03-06	1975-09-08	Ericsson Telefon Ab L M
DE2547880C2 (en) *	1975-10-25	1981-09-24	Standard Elektrik Lorenz Ag, 7000 Stuttgart	Circuit arrangement for recognizing the operating states of a subscriber line and for connecting and disabling calls in telephone exchanges
US4099032A (en) *	1977-03-25	1978-07-04	Wescom, Inc.	Loop current detector
CH618306A5 (en) *	1977-08-24	1980-07-15	Siemens Ag Albis	Arrangement for identifying a DC switching signal in a telecommunications system

1979
- 1979-06-06 NL NL7904429A patent/NL7904429A/en not_active Application Discontinuation
1980
- 1980-05-14 US US06/149,781 patent/US4319092A/en not_active Expired - Lifetime
- 1980-05-29 DE DE3020353A patent/DE3020353C2/en not_active Expired
- 1980-05-29 CA CA000353000A patent/CA1143491A/en not_active Expired
- 1980-06-03 SE SE8004114A patent/SE447691B/en not_active IP Right Cessation
- 1980-06-03 JP JP7382980A patent/JPS55165092A/en active Granted
- 1980-06-03 AU AU59006/80A patent/AU537316B2/en not_active Ceased
- 1980-06-03 SE SE8004114D patent/SE8004114L/en not_active Application Discontinuation
- 1980-06-03 IT IT22533/80A patent/IT1131255B/en active
- 1980-06-03 GB GB8018124A patent/GB2052215B/en not_active Expired
- 1980-06-04 BE BE0/200889A patent/BE883638A/en not_active IP Right Cessation
- 1980-06-04 FR FR8012434A patent/FR2458963B1/en not_active Expired

Also Published As

Publication number	Publication date
AU5900680A (en)	1980-12-11
BE883638A (en)	1980-12-04
GB2052215A (en)	1981-01-21
SE447691B (en)	1986-12-01
JPS6239877B2 (en)	1987-08-25
CA1143491A (en)	1983-03-22
FR2458963B1 (en)	1987-07-31
JPS55165092A (en)	1980-12-23
IT8022533A0 (en)	1980-06-03
IT1131255B (en)	1986-06-18
AU537316B2 (en)	1984-06-14
US4319092A (en)	1982-03-09
DE3020353A1 (en)	1980-12-18
NL7904429A (en)	1980-12-09
FR2458963A1 (en)	1981-01-02
DE3020353C2 (en)	1983-12-08
GB2052215B (en)	1983-05-25

Legal Events

Date	Code	Title	Description
1995-02-28	NAV	Patent application has lapsed	Ref document number: 7904429-3

Publication	Publication Date	Title
ES250816Y (en)	1981-05-16	AN ELECTRICAL DEVICE
SE7700343L (en)	1977-07-20	AUTOMATIC FOCUSING DEVICE
GB2030022B (en)	1983-12-14	Focus detecting device
SE7613781L (en)	1977-07-06	CIRCUIT DEVICE FOR AUTOMATIC SWITCH BETWEEN SEVERAL POWER SOURCES
IT1103850B (en)	1985-10-14	SEPARATOR DEVICE
JPS5346028A (en)	1978-04-25	Automatic focusing device
ES490761A0 (en)	1981-03-16	AN ELECTRICAL SWITCH DEVICE
SE8004114L (en)	1980-12-07	POWER DETECTOR DEVICE FOR AN AUTOMATIC PHONE SWITCH
GB2011213B (en)	1982-04-28	Focus detecting device
ES489290A0 (en)	1981-02-16	AN ELECTRICAL SWITCH DEVICE
IT1131568B (en)	1986-06-25	AUTOMATIC SWITCH
GB2029153B (en)	1982-12-22	Focus detecting device
ES493345A0 (en)	1981-04-01	AN INERCIAL SWITCHING DEVICE
JPS533333A (en)	1978-01-13	Automatic focusing device
JPS5367424A (en)	1978-06-15	Automatic focusing device
JPS52135026A (en)	1977-11-11	Power source automatic change over device
JPS5317268A (en)	1978-02-17	Automatic focusing device
GB2016852B (en)	1982-08-25	Device for detecting coincident focusing points
SE7811831L (en)	1979-06-13	AUTOMATIC STACKING DEVICE
IT1131545B (en)	1986-06-25	AUTOMATIC SWITCH
ES495970A0 (en)	1981-07-01	AN ELECTRICAL CONTROL DEVICE
JPS5323079A (en)	1978-03-03	Automatic testing device for small noofuse breaker
BR8007517A (en)	1981-06-02	ELECTRICAL SWITCHING DEVICE
ES249812Y (en)	1981-07-16	AN ELECTRICAL CONTROL DEVICE
ES498140A0 (en)	1982-02-01	AN IMPROVED SWITCHING DEVICE